Improvement in engines operated by heated liquids



JAMES s. BALDWIN.

Improvement in Engines operated by Heated Liquids.

No. 121,481, PatentedDec-5,1871.

UNITED STATES PATENT QFFIGE.

JAMES S. BALDWIN, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN ENGINES OPERATED BV HEATED LIQUIDS.

Specification forming part of Letters Patent No. 121,481, dated December5, 1871.

- ner that its expansion by heat can only take place through a specificchannel, where its power may be utilized. There are many liquids thatmay be used in this apparatus, but, for brevity, I shall speak of oil asa representative liquid. Linseedoil increases in volume .08 between 32and 212 Fahrenheit.

The oil flows from an elevated tank, an accumulator, or other suitablereservoir, through the pipe A and valve B to the cylindrical vessel 0,which is surrounded by the jackets D and E. The egress of the oil iscontrolled by the valve F, which, with B, is actuated by the rod G, asshown. The jacket D is constantly filled with steam or other heatingmedium.

If, now, 0 is filled with hot oil, heated by the process about to bedescribed, a suitable movement of the rod G will simultaneously open Band F, and cold oil entering through A will rapidly force out the hotoil from G into the jacket E, where it will assist in heating thecontents or" C,

while being itself partially cooled. The motion of G being now reversed,B and D will be simultaneously closed and a passage opened through B tothe pipe H, which communicates with any machine where the expansivepower of the oil can be utilized. It is obvious that a repetition ofthese operations will furnish successive volumes of oil under thepressure due to its expansion by heat. The rod Gr may be moved by hand,or it may have a regular reciprocating movement imparted to it by anysuitable machine, the frequency ofits movements being determined byactual practice in each case. The liquid which flows from E may bereturned by a pump to the source which supplies A, and so used over andover. The pipe A may be of considerable length and may pass through atank filled with cold water; but as there is nothing new in such adevice I need not particularly describe it. It is only necessary that insome suitable manner the liquid shall be supplied cold through the pipeA under sufficient pressure to insure its entry into C.

I claim The combination of cylindrical vessel G with the jackets D andE, pipe A, and valves B and F, arranged substantially as set forth, asan apparatus for controlling the temperature of liquids.

Witnesses: JAMES S. BALDWIN.

MORRIS B. LINDsLEY, CHAS. H. SKINNER. (2)

